Retro Video Gamer

Sword of Sodan is a hack and slash video game released for the Amiga in 1988 by Discovery Software, which also commissioned a port for the Apple IIGS (but not made public until 2018). A scaled-down version for the Sega Genesis was released in 1990 by Electronic Arts, and in 1993 it was released for the Apple Macintosh System 7 by Bethesda Softworks.

Plot

Set in a medieval fantasy world, Lordan is the ruler of the northern kingdom. Zoras, an evil necromancer, is in his tower made of human bones, planning to make a second attempt to overthrow Lordan, after his first attempt was defeated by Sodan, the hero.

Zoras studied ancient parchments where he learned to experiment with long forgotten spells. His new knowledge enabled him to conjure all kinds of nightmarish creatures, which he sent marching towards Lordan's castle, leaving a path of death and destruction.

To protect his twin children, son Brodan and daughter Shardan, Lordan arranged for them to be taken from the castle across the Cthol mountains to the farthest corner of the land. After Lordan's defeat and death at Zoras' hands, his children were raised by an old, bitter man, who also trained them in the art of sword combat.

Before they start their journey to defeat Zoras, the old man hands over to them the sword of Sodan. Armed with the sword, they fight their way to castle Craggamoor and face the tyrannical Zoras. After they defeat Zoras, the people accept them as the true rulers and saviors of the land.

Source:  Wikipedia (https://en.wikipedia.org/wiki/Sword_of_Sodan)

Pretty accurately describes the game.  I was jealous of Amiga owners watching this game.  But, I strongly suspected the gameplay was too rough to be enjoyable.